MY and NY3 2 nearly insoluble salts have the same Ksp value of 6.02 ×10^-13 at room temperature. Which statement would be true in regard to MY and NY3 1)the addition of the salt of KY to the solution of MY and NY3 will have no effect on their solubilities 2)The salts MY and NY3 are more soluble in 0.5 M KY than in pure water. 3) The molar solubility of MY in water is less than NY3

Dear Student,

MY  M + Y             s       sKsp = (s)(s) = s2and, Ksp = 6.2×10-13or, s2= 6.2×10-13or, s= 6.2×10-13=7.87×10-7 molL-1NY3  N + 3Y               s      3sKsp=(s)(3s)3= 27s4and, 27s4= 6.2×10-13or, s=( 6.2×10-1327)14or, s= 3.89×10-4 molL-1Therefore, molar solubility of NY3 is more than MY in water.Hence, correct answer is (3)

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